1 //===--- BPF.cpp - Implement BPF target feature support -------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements BPF TargetInfo objects.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "BPF.h"
14 #include "Targets.h"
15 #include "clang/Basic/MacroBuilder.h"
16 #include "clang/Basic/TargetBuiltins.h"
17 #include "llvm/ADT/StringRef.h"
18 
19 using namespace clang;
20 using namespace clang::targets;
21 
22 const Builtin::Info BPFTargetInfo::BuiltinInfo[] = {
23 #define BUILTIN(ID, TYPE, ATTRS)                                               \
24   {#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, nullptr},
25 #include "clang/Basic/BuiltinsBPF.def"
26 };
27 
getTargetDefines(const LangOptions & Opts,MacroBuilder & Builder) const28 void BPFTargetInfo::getTargetDefines(const LangOptions &Opts,
29                                      MacroBuilder &Builder) const {
30   Builder.defineMacro("__bpf__");
31   Builder.defineMacro("__BPF__");
32 }
33 
34 static constexpr llvm::StringLiteral ValidCPUNames[] = {"generic", "v1", "v2",
35                                                         "v3", "probe"};
36 
isValidCPUName(StringRef Name) const37 bool BPFTargetInfo::isValidCPUName(StringRef Name) const {
38   return llvm::is_contained(ValidCPUNames, Name);
39 }
40 
fillValidCPUList(SmallVectorImpl<StringRef> & Values) const41 void BPFTargetInfo::fillValidCPUList(SmallVectorImpl<StringRef> &Values) const {
42   Values.append(std::begin(ValidCPUNames), std::end(ValidCPUNames));
43 }
44 
getTargetBuiltins() const45 ArrayRef<Builtin::Info> BPFTargetInfo::getTargetBuiltins() const {
46   return llvm::makeArrayRef(BuiltinInfo, clang::BPF::LastTSBuiltin -
47                                              Builtin::FirstTSBuiltin);
48 }
49 
handleTargetFeatures(std::vector<std::string> & Features,DiagnosticsEngine & Diags)50 bool BPFTargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
51                                          DiagnosticsEngine &Diags) {
52   for (const auto &Feature : Features) {
53     if (Feature == "+alu32") {
54       HasAlu32 = true;
55     }
56   }
57 
58   return true;
59 }
60